EAN: 9783319942377

Bilder-Quelle: discount24.de - Sport-Freizeit

This book is devoted to the study of positive solutions to indefinite problems. The monograph intelligibly provides an extensive overview of topological methods and introduces new ideas and results. Sticking to the one-dimensional setting the author shows that compelling and substantial research can be obtained and presented in a penetrable way. In particular the book focuses on second order nonlinear differential equations. It analyzes the Dirichlet Neumann and periodic boundary value problems associated with the equation and provides existence nonexistence and multiplicity results for positive solutions. The author proposes a new approach based on topological degree theory that allows him to answer some open questions and solve a conjecture about the dependence of the number of positive solutions on the nodal behaviour of the nonlinear term of the equation. The new technique developed in the book gives as a byproduct infinitely many subharmonic solutions and globally defined positive solutions with chaotic behaviour. Furthermore some future directions for research open questions and interesting unexplored topics of investigation are proposed.

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28.03.2025 um 14:06 Uhr

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